Folder for box-staying machines.



H. DE SMITH.

FOLDER FOR BOX STAYING MACHINES.

APPLICATION FILED Nov. 2a, 1906.

927,502.- Patented July 13,1909.

UNITED STATES PATENT OFFICE.

HENRY DE SMITH, OF ROCHESTER, NEW YORK, ASSIGNOR TO M. D. KNOWLTON COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

FOLDER FOR BOX-STAYING MACHINES.

To all whom it may concern:

Be it known that I, HENRY DE SMITH, citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Folders for B0X-Staying Machines, of which the following is a specification.

In box-staying machines of the general type disclosed in Letters Patent No. 4917,955, dated March 10, 1891, a stay-strip of paper or other suitable material is` carried by a reel and is fed therefrom by feeding mechanism to a position between clamping dies which operate to press the stay-strip upon the corner of an interposed box; the staystrip being rendered adhesive during its passage from the reel to the clamping dies in order that it may be causedto adhere to the box corners when pressed thereon.

In order to assure the stay-strip being evenly applied to the boX corners by the clamping dies it is also acted upon during its passage from the reel to the clamping dies by a so-called folder which operates to fold and centrally crease the stay-strip so that it will take and maintain a substantially V-shape form when introduced between the clamping dies for location over the box corner.

Folders for acting on stay-strips in the manner referred to usually comprise a guideplate having cooperating folders and creasers; the folders being in the form of oppositely located fixed walls arranged some distance apart at their rear ends and converging toward their front ends, whereby the longitudinal edges of the stay-strip fed therebetween will be gradually brought together and the stay-strip caused to assume a substantially inverted-U-shape form, and the creasers being also in the form of oppositely-located walls arranged adjacent to the front or converging ends of the folders to receive the folded stay-strip therefrom but being sufficiently close together to sharply crease said staystrip at its longitudinal center. In the use of these folders several objectionable features have been Specification of Letters Patent.

Application filed November 23, 1906.

Patented July 13, 1909.

Serial No. 344,781.

found to exist; one being that the creasers, when adjusted sufficiently close to make a sharp crease, offer such a resistance to the stay-strip as to interfere more or less with its easy and proper feeding by the feeding mechanism, and another being a lack of ease and readiness in effecting the adjustment of the creasers.

Having in mind the aforesaid objectionable features it has been the object of my present invention to provide anl improved folder in which such features will be avoided and the folder otherwise rendered more eilt cient and desirable.

To this end the invention consists in the novel features of construction and combinations of parts as hereinafter set forth in detail and pointed out in the appended claims.

Referring now to the accompanying drawings forming part of this specification: Fig-` ure 1 is a plan view of a folder embodying my invention, with a piece of stay-strip ex tending through the saine. Fig. 2 is a side elevation of the same. Fig. 3 is a front end elevation, and Fig. i is a detail bottom plan.

As the folder is preferably adapted to be detachably connected to the box-staying ma chine on which it is used, it is shown in the present case as comprising an attaching bracket 1 on which the several other parts of the folder are carried. Attached to the to'p of said bracket 1 is a folder guide-plate 2 having at its rearend an upturned portion 3 provided with a guide-opening a through which the stay-strip s is adapted to be entered onto the guide-plate.

Located on the guide-plate in advance of strip caused to assume a substantially inverted-U-shape form as shown. Heretofore these folders have been made integral with the guide-plate and, being usually formed of brass, have become worn through by the continuous contact therewith of the sharp edges of the stay-strip in being fed or drawn through the folder, in which event the folder as a whole has been rendered useless. By making the folders separately, however, and detachably connecting them to the guideplate, enables such parts to be readily replaced after becoming unduly worn and so permits the indefinite use of the folder.

Attached to the folders 5, 5, adjacent to their front or converging ends and in position opposite each other are two screw-studs 7, 7, having journaled thereon revoluble rollers 8, 8, which constitute the creasers for acting on the folded stay-strip and centrally creasing the same as it is fed forward from between the folders. These revoluble creasers, by reason of having a rolling 'contact with the stay-strip, obviously ofl'er much less resistance to said strip than would stationary or non-revoluble creasers, and also operate to effect a sharper crease of the strip and with less liability of damage thereto.

The folders 5, 5, being pivoted to the guide-plate are capable of a lateral movement at their front or creaser-carrying ends for the purpose of permitting a like movement or adjustment of the creasers, which adjustment is desirable for the purpose of effecting the ready and convenient initial insertionof the stay-strip therebetween and also for the purpose of causing the coperating creasers to act with the desired creasing pressure upon the interposed stay-strip.

A spring 9 attached to the under side of the guide-plate 2 and having two arms 9, 9, engaging studs 10, 10, at the under side of the creaser-carrying ends of the folders 5, 5, operates to yieldingly hold the folders and supported creasers in their normal operative positions; and as a simple, effective, and readily operated means for separating or moving apart the creasers for the purpose of varying the space therebetween, 1 have provided an adjusting cam-lever 11 which is pivot-ally mounted on one of the creaser pivot-studs 7 for engagement with the pivot stud of the opposing creaser; the change in position of the creasers as effected by this adjusting lever being indicated by the full and dotted lines in F ig. 1. The cam surface 12 of the adjusting lever may have any desired form for engagement with the cooperating pivot stud, but preferably and as shown in the drawings, it is formed with a series of notches in order to assure a more positive holding of the engaged parts in adjusted position under the action of the spring 9.

Arranged transversely above the folders and adjacent to the creasers is a guide 111 which is adapted to engage the upper or folded edge of the stay-strip to prevent its rising or working upward from between the said folder and creaser devices. This guide is also preferably a revoluble one made in the form of a roller mounted on a stud 15 projecting from a head or block 1G which is adjustably mounted on a spindle 17 rising from the bracket 1 and adapted to be yieldingly held in adjusted operative position by means of the usual adjusting-nut 18 and interposed coiled spring 19.

That I claim is:

1. A device of the character described comprising a guide-plate, and two laterallyadjustable convergingly-arranged coperating folders on said guide-plate carrying two cooperating creasers adjacent to their point of convergence.

2. A device of the character described comprising a guide-plate, and two laterallyadjustable convergingly-arranged cooperating folders on said guide-plate carrying two revoluble cooperating creasers adjacent to their point of convergence.

3. A device of the character described comprising a guide-plate, and two laterally-adjustable convergingly-arranged cooperating folders pivoted to said guide-plate and carrying two cooperating creasers adjacent to their point of convergence.

4. A device of the character described comprising a guide-plate, two laterally-movable converginglyarranged cooperating folders on said guide-plate carrying two cooperating creasers adjacent to their point of convergence, means yieldingly forcing the creaser-carrying ends of the folders toward each other, and adjusting means for separating' or moving apart said creaser-carrying ends of the folders.

5. A device of the character described comprising a guide-plate, two convergingly-arranged cooperating folders pivoted to said guide-plate and carrying two revoluble cooperating creasers adjacent to their point of convergence, means yieldingly forcing the creaser-carrying ends of the folders toward each other, and an adjusting lever for separating or moving apart said creaser-carrying ends of the folders.

o. A device of the character described comprising a guide-plate, two laterally-adjustable converginglyarranged cooperating folders on said guide-plate carrying two cooperating creasers adjacent to their point of convergence, and a guide arranged transversely above said folders adjacent to the creasers.

7. A device of the character described comprising a guide-plate, two laterally-adjustable converginglyarranged cooperating folders on said guide-plate carrying two revoluble cooperating creasers adjacent to their point of convergence, and a revoluble guide arranged transversely above Said folders adj zicent to the creasers.

8. A device of the character described coinprising a guide-plate, and two laterellyedjustable convergingly-arranged cooperating folders detachably connected to said guideplate and carrying tvvo coperating creasers l0 adjacent to their point of convergence.

Signed at Rochester, in the county of Mon roe and State of New York, this 9th day of November, A. D. 1906.

HENRY DE SMITH. lVtnesses F. K. KNoWL'roN, N. P. SANFORD 

